258443 has 2 divisors, whose sum is σ = 258444. Its totient is φ = 258442.

The previous prime is 258437. The next prime is 258449. The reversal of 258443 is 344852.

It is a balanced prime because it is at equal distance from previous prime (258437) and next prime (258449).

It is a cyclic number.

It is not a de Polignac number, because 258443 - 2¹⁴ = 242059 is a prime.

It is not a weakly prime, because it can be changed into another prime (258449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129221 + 129222.

It is an arithmetic number, because the mean of its divisors is an integer number (129222).

2²⁵⁸⁴⁴³ is an apocalyptic number.

258443 is a deficient number, since it is larger than the sum of its proper divisors (1).

258443 is an equidigital number, since it uses as much as digits as its factorization.

258443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 26.

The square root of 258443 is about 508.3728946354. The cubic root of 258443 is about 63.6973832149.

It can be divided in two parts, 2 and 58443, that multiplied together give a triangular number (116886 = T₄₈₃).

The spelling of 258443 in words is "two hundred fifty-eight thousand, four hundred forty-three".